New to AWK scripts: Questions on awk

I am new to the awk scripts. I am confused about the delimiter concept in the awk script. say delimiter is , or | or anything, then a new line is treated as a next line ? like e.g.

00|01|05|05|03|13|12|04|06|80|
03|01|01|00|52|10|12|11|05|12|

So there are 10 fields in each row, and awk body works on each row on an identical fashion. Say I want the first 14 out of these 20 in one array and the remaining 6 in a different array. So do the last | is it treated as $10. But there is no $11 or $11 =\n ??. The way I was thinking of is keep a counter at the beginning of the awk body. If it is in equal to 2, then only read till $4. So can use the for loop with $j where j runs from 1 to 4 ?? is it allowed?